Leaf-turner



.(No Model.)

O. H. VAN LDlllfISEN.

LEAF TURNER.

UNITED STATES PATENT OFFICE.

CHARLES H. VAN DEUSEN, OF VERONA, ILLINOIS.

LEAF-TU RN ER.

SPECIFCATION formng part of Letters Patent No. 473,246, dated April 19,1892.

Application filed May 1, 1891. Serial No. 391,291. (No model.)

To alwhom it may concern:

Be it known that I, CHARLES H. VAN DEU- sEN, a citizen of the UnitedStates of America, resding at Verona, in the county of Grundy and Stateof Illinois,have invented certain new and useful Improvements inLeaf-Turners, of which the following is a specification,reference beinghad therein to the accompanying drawings and the letters of referencethereon, forming a part of this specification, in which- Figure 1 is afront elevation of the device. Fig. 2 is a bottom plan view showing anarm in the act of turning. Fig. 3 is avertical section of the device,taken on line 1 of Fig. 1, looking to the left, showing one of thespringclamps for holding aleaf of abook. Fig 4 is a side view of one ofthe spring-jaws for grasping a book-leaf, and Fig. 5 is a side elevationof one of the racks and its pinion for operating one of the leaf-turningarms.

This invention relates to certain improvements in leaf-turners, designedmore particularly for use on a piano for turning leaves of music, whichimprovemcnts are fully set forth and explained in the followingspecification and claims.

Referring to the drawings, A represents a base-board for supporting theworking parts of the device and for supporting a book, the leaves ofwhich are to be turned.

E is a foot-rail secured on the upper side of board A, and is forsupporting the lower end of a book When the board A is in properposition on a piano.

F F are housings for containing coil-springs on horizontal rods Z, theends of which coilsprings extend out over vboard A and form spring-armsc for clamping the leaves of a book, not to be turned, to board A.

B B B are a series of arms having on their outer ends spring-jaws D,respectively, for grasping in snccessive order the leaves to be turned.The inner ends of said arms are pivotally connected to the upper side ofboard A, centrally between the housings F F, and are respectivelyprovided on their inner ends with pinions V V V for engaging,rcspectively, the racks S of the sliding bars 7' 1' r, as shownparticularly in Fig. 5. The opposite or outer ends of said sliding barsextend upward and form arms Y, by means of which they maybe respectivelyreciprocated.

ll and VV are standards forming an object to grasp in connection witharms Y in order to reciprocate them. v

J isa gate forming an extension of the footrail E, and is designed tobehinged or pivoted thereto and turned over backward, as shown in brokenlines in Fig. 1, when the device 1s in operation. NVhen not inoperation, said gate is for the purpose of holding arms Bdown, as shownin full lines in said figure, so that they may be held in place when thedevice 1s not being used.

O are posts for holding separate and in place the reciprocating bars r.

Vhen it is desired to remove the springarms c from pressure on the book,they are designed to be turned backward in theslot m (shown in thehousings) and placed behind the shoulder n, which will hold said armsoff the book as long as may be desired.

In operation the book or shcet of music is laidupon the board A so itsback will be about central on said board. The spring-arms c c are thenlet down to rest upon and hold the leaves not to be turned. The leavesto be turned are respectively placed one in each of the springjaws D,said jaws grasping them at their lower outercorners or near theircorners, and being at such time in the position shown in Fig. 1. Vhen itis desired to turn a leaf, or the first one of the series to be turned,the thumb of the left hand is placed against the standard I-I and theforefinger behind the standard Y of the bar r to be reciprocatedforward, The operator may then move one of said bars r with its rackforward, and the resultwill be to partially rotate the pinion V, meshingwith the bar and attached to one of the arms B, and reverse said arm andcause it to turn, as is shown in Fig. 2, and carry with ita leaf thatmay be grasped byits spring-jaw D, thus turning the leaf, and so eachleaf may be turned in succession. Said leaves may be turned back totheir first position simply by reciprocating racks S back to their firstposition, in which case the said thuinb and finger would grasp standardXV and arms Y. In this instance the device is shown as arranged to turnthree leaves only; but it may be constructed with suifl'cient parts toturn any desired number of leaves. The

spring-arms c c have their outer ends arranged to rest on pads securedto the board A, so that IOO spring-jaws Don their outernds and thepinions V on their inner ends for engaging, respeotively, said raoks,the housin'gs F F, rie; spetivly having the slotsm m'forming theshionlid'ers nn'afld thespri'n'g-'arrns c o, having their inner endsforrning. a coil within said hoiis'ihgs, all arranged to op'ratesiibstantially as and for the purpose set forth.

2. In the leaf-turner shown and deseribed, in combination with the boardA, the housingsv'F F, respeotiveiy having the slots m, formig theshouldersn, and the coii-springs arranged within said housings andhaving their en'ds'extend to form the spring-arms c c for seouring abook on said board, substantially as and for the purpose set forth.

CHARLES H. VAN DEUSEN. Wi'fn'ssz N. H. BAJLY, o. W. W'RTE'N.

